Abstract
Perilimnastes aura, a species found in Sekong province, Laos, is described as new. Its habit and morphology of leaves, inflorescences, flowers, and capsules match all diagnostic features of Perilimnastes. It most closely resembles P. suberalata in the quadrangular stems, unequal leaves, and glabrescent, oblanceolate to broadly elliptic leaf blade, but differs in the acute leaf apex (vs. acuminate), 1–3-flowered inflorescence (vs. 1-flowered), quadrangular hypanthium (vs. obtusely quadrangular) and broadly triangular, 1.8–2.2 mm long calyx lobes (vs. linear, 8–10 mm long). Information on habitat, ecology, and a preliminary assessment of the conservation status are also provided for the new species.
References
- Blume, C.L. (1831) Über einige ostindische und besonders javanische Melastomaceen. Flora 14: 465–528.
- Cellinese, N. (2002) Revision of the Genus Phyllagathis (Melastomataceae: Sonerileae) I. The species in Burma, Thailand, Peninsular Malaysia and Sumatra. Blumea - Biodiversity, Evolution and Biogeography of Plants 47 (3): 463–492.
- Cellinese, N. (2003) Revision of the Genus (Melastomataceae: Sonerileae) II. The Species in Borneo and Natuna Island. Blumea - Biodiversity, Evolution and Biogeography of Plants 48 (1): 69–97.
- Chen, C. (1984) Materia ad flora Melastomataceae sinensium. Bulletin of Botanical Research 4: 33–68.
- Chen, C. & Renner, S.S. (2007) Melastomataceae. In: Wu, Z.Y., Raven, P.H., Hong, D.Y. (Eds.) Flora of China, vol. 13. Science Press, Beijing; Missouri Botanical Garden Press, St. Louis, pp. 360–399.
- Dai, J.H., Van Do, T. & Liu, Y. (2023) Four new species of Perilimnastes (Sonerileae, Melastomataceae) from Vietnam. PhytoKeys 235: 1–19.
- Hansen, C. (1990) New species and combination in Allomorphia, Phyllagathis, and Sporoxeia (Melastomataceae) in Indo-China. Bulletin Du Muséum National d’Histoire Naturelle. Section B, Adansonia: Botanique Phytochemie 12 (1): 37–41.
- Hansen, C. (1992) The genus Phyllagathis (Melastomataceae): characteristics, delimitations. The species in Indo-China and China. Bulletin du Muséum National d’Histoire Naturelle. Section B, Adansonia 3–4: 355–428.
- IUCN Standards and Petitions Committee. (2024) Guidelines for Using the IUCN Red List Categories and Criteria. Version 16. Prepared by the Standards and Petitions Committee. Available from: http://www.iucnredlist.org/ (accessed 1 March 2024)
- Liu, Y., Dai, J.-H., Zhuang, Q.-Y., Zou, C.-Y. & Ma, K.-N. (2024) Resurrection of Perilimnastes (Sonerileae, Melastomataceae) with a description of a new species P. nana. PhytoKeys 238: 11–31. https://doi.org/10.3897/phytokeys.238.116168
- Ridley, H.N. (1918) New and rare Malayan Plants Series X. Journal of the Straits Branch of the Royal Asiatic Society 79: 63–100.
- Zhou, Q.J., Dai, J.H., Lin, C.W., Ng, W.L., Van Do, T., Wai, J.S., Michelangeli, F.A., Reginato, M., Zhou, R.C. & Liu, Y. (2022) Out of chaos: Phylogenomics of Asian Sonerileae. Molecular Phylogenetics and Evolution 175: 107581. https://doi.org/10.1016/j.ympev.2022.107581m